CN103937985B - Continous way fuming furnace and adopt its continuous fuming technique - Google Patents
Continous way fuming furnace and adopt its continuous fuming technique Download PDFInfo
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- CN103937985B CN103937985B CN201410158140.1A CN201410158140A CN103937985B CN 103937985 B CN103937985 B CN 103937985B CN 201410158140 A CN201410158140 A CN 201410158140A CN 103937985 B CN103937985 B CN 103937985B
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Abstract
The invention discloses a kind of continous way fuming furnace and adopt its continuous fuming technique, this continous way fuming furnace comprises body of heater, in body of heater, there is furnace chamber, being provided with in furnace chamber for furnace chamber being become melting area, blowing district and stripping section, being separated by partition wall and slag dam.The lower end of partition wall is provided with the first channel being communicated with melting area and blowing district, partition wall exceed bath surface and slag dam lower than bath surface.Body of heater is provided with charging opening, smoke outlet, the first gun slot, the second gun slot for adding material in melting area, for discharging the slag notch of waste from stripping section; First spray gun and the second spray gun, the first spray gun is inserted in the first gun slot, and for spraying into fine coal and oxygen-containing gas in melting area, the second spray gun is inserted in the second gun slot, for spraying into fine coal and oxygen-containing gas in blowing district and stripping section.According to the continous way fuming furnace of the embodiment of the present invention, slag can be processed continuously.
Description
Technical field
The present invention relates to smelting field of nonferrous metal, relate to a kind of continous way fuming furnace particularly and adopt its continuous fuming technique.
Background technology
Fuming furnace is conventional non-ferrous metal metallurgy equipment, such as, for refining the process of the slag of plumbous zinc.Fuming furnace in correlation technique cannot process cold burden usually, even if process cold burden, the amount of cold burden is also restricted.In addition, fuming furnace in correlation technique is all also referred to as discontinuous fuming furnace, operation is discontinuous, namely charging and slagging are all discontinuous, after one batch materials is disposed, carry out the process of next batch material after emptying, therefore have that processing efficiency is low, energy consumption is high, and there is the frequent alternately operating starting and stop.Air feed, coal supply also need to exchange thereupon, and complex operation is also dangerous.For realizing the different material of all kinds of leaded, zinc of process and making continuous fuming, stablize operation, reduction energy consumption, the demand that a kind of continuous fuming furnace device and technique thereof meet market need be developed.
Summary of the invention
The present invention is intended to solve one of above-mentioned technical problem of the prior art at least to a certain extent.For this reason, one object of the present invention is to propose a kind of continous way fuming furnace, and this continous way fuming furnace can process material that is leaded, the volatile metal such as zinc, tin continuously, as lead-zinc furnace cinder, zinc factory leached mud, medium tin ore etc.
Another object of the present invention is to propose a kind of continuous fuming technique utilizing this continous way fuming furnace.
According to the continous way fuming furnace of the embodiment of the present invention, comprise body of heater, in described body of heater, there is furnace chamber, be provided with for described furnace chamber being become melting area, blowing district and the partition wall of stripping section and slag dam in described furnace chamber, the lower end of described partition wall is provided with the first channel being communicated with described melting area and described blowing district, described partition wall higher than bath surface and described slag dam lower than bath surface, described body of heater be provided with smoke outlet, the first gun slot, the second gun slot, for adding the charging opening of material and the slag notch for discharging waste from described stripping section in described melting area; First spray gun and the second spray gun, described first spray gun is inserted in described first gun slot, for spraying into fine coal and oxygen-containing gas in described melting area, described second spray gun is inserted in described second gun slot, for spraying into fine coal and oxygen-containing gas in described blowing district and described stripping section.
According to the continous way fuming furnace of the embodiment of the present invention, be provided with in body of heater and furnace chamber become melting area, the partition wall of blowing district and stripping section and slag dam, and body of heater is provided with the first gun slot be communicated with melting area, and with the second gun slot of being communicated with stripping section of blowing district, and slag notch is communicated with stripping section.When by slag notch discharge residue, the liquid in furnace chamber can not be discharged completely, therefore, in discharge process, still can put into pending material in furnace chamber.Thus, this fuming furnace can run continuously, improves the efficiency of this fuming furnace material handling.Oxygen-containing gas and fine coal is passed into melting area by the first gun slot, and pass into oxygen-containing gas and fine coal by the second gun slot to blowing district and stripping section, the oxygen and fine coal be convenient to passing into the first spray gun and the second spray gun controls respectively, to reach optimum value, thus improve the efficiency of reacting and carrying out.
In addition, continous way fuming furnace according to the above embodiment of the present invention, can also have following additional technical characteristic:
According to one embodiment of present invention, the heat material that described charging opening comprises for adding heat material to melting area adds entrance and the cold burden for adding cold burden to melting area adds entrance.Thus, be convenient in furnace chamber, add cold burden and/or heat material, this continous way fuming furnace process cold burden or heat material can be facilitated, the operation of this continous way fuming furnace material handling can be reduced, improve processing efficiency, also can realize processing cold burden operation completely.
According to one embodiment of present invention, described heat expects that adding entrance can be located on the sidewall of described body of heater closedly.Thus, when this continous way fuming furnace only processes cold burden, heat can be expected that heating gate is closed, thus reduction calorific loss, improve energy utilization rate, energy-conserving and environment-protective, even if process cold burden completely, heat material charging opening enters the startup that heat material is conducive to stove, reduces start time.
According to one embodiment of present invention, described slag notch comprises the upper slag notch higher than described first gun slot and the second gun slot and the lower slag notch lower than described first gun slot and the second gun slot, described body of heater is also provided with the drain close to described furnace chamber diapire.Upper slag notch slagging during normal running, when needing to change spray gun, lower slag notch slagging.Drain is positioned at the position near furnace bottom below lower slag notch, and drain is for melt in emptying stove during blowing out.
According to one embodiment of present invention, described body of heater is also provided with the overfiren air port for blasting oxygen-containing gas to the top of described furnace chamber.With CO superfluous in after-flame furnace gas and combustiblematerials, to ensure that the safety of waste heat boiler and dust collecting system is carried out.
According to one embodiment of present invention, described slag dam lower end is provided with the second passage being communicated with described blowing district and described stripping section.Thus, be convenient to shut down melt in emptying stove.
According to one embodiment of present invention, described furnace chamber diapire is anti-domes, is tilted to put slope to stripping section by melting area.
According to the continuous fuming technique of the embodiment of the present invention, this continuous fuming technique adopts the continous way fuming furnace according to previous embodiment of the present invention to carry out fuming, and described continuous fuming technique comprises the following steps: to described fuming furnace addition material; Oxygen-containing gas and fine coal is blasted in described fuming furnace; The flue dust of Footwall drift oxide compound the waste discharged in fuming furnace.Always higher than spray gun when liquid level is normally produced in continuous fuming furnace, ensure that spray gun is in submerged state continuously, to realize adding warm sludge continuously or cold burden completes fusing, blowing, dilution technique.Flue gas, after waste heat recovery, enters dust collecting system.The waste periodic exhaustion of stripping section is outer after shrend to be sold.
According to the continuous fuming technique of the embodiment of the present invention, in the reaction process of fuming furnace, can not be emptied completely during slag normal running in fuming furnace, though therefore slagging process with add slag process can simultaneously and continuous print carry out, thus make fuming furnace can continuous print process slag.
According to one embodiment of present invention, this continuous fuming technique also comprises and blasts secondary air to the top in described fuming furnace.Make superfluous CO and combustiblematerials after-flame, the metal oxygen of volatilization changes into oxide compound in order to safety in production.The metal oxide flue dust that dust collecting system is collected is sold as outside product.Waste is harmless slag, can sell cement mill outward, and the middle pressure steam of residual heat system reclaims, and can be used for generating.
Accompanying drawing explanation
Fig. 1 is the cross-sectional figure of the continuous fuming furnace of the embodiment of the present invention.
Fig. 2 is the sectional side elevation of the continuous fuming furnace of the embodiment of the present invention.
Reference numeral: continous way fuming furnace 100; Body of heater 1; Furnace chamber 11; Melting area 12; Blowing district 13; Stripping section 14; Manhole plate 16; Partition wall 21; Slag dam 22; First channel 15; Heat material adds entrance 101; Smoke outlet 102; First gun slot 103; Second gun slot 104; Slag notch 105; Cold burden adds entrance 107; Upper slag notch 105a; Lower slag notch 105b; Drain 106; Overfiren air port 108; Second passage 109.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
Fuming furnace is conventional non-ferrous metal metallurgy equipment, such as, for refining the process of the slag of plumbous zinc.Fuming furnace in correlation technique cannot process cold burden usually, even if process cold burden, the amount of cold burden is also restricted.In addition, the fuming furnace in correlation technique is all also referred to as discontinuous fuming furnace, and operation is discontinuous, and namely charging and slagging are all discontinuous, after a batch materials is disposed, carry out the process of next batch material after emptying, has that processing efficiency is low, energy consumption is high thus.The present invention proposes a kind of continous way fuming furnace for this reason.
Describe the continous way fuming furnace 100 of the embodiment of the present invention with reference to the accompanying drawings in detail.This continous way fuming furnace can process material that is leaded, the volatile metal such as zinc, tin continuously, as lead-zinc furnace cinder, zinc factory leached mud, medium tin ore and scruff etc.
According to the continous way fuming furnace 100 of the embodiment of the present invention, comprise body of heater 1, there is in body of heater 1 furnace chamber 11, be provided with for furnace chamber 11 being separated into melting area 12, blowing district 13 and the partition wall 21 of stripping section 14 and slag dam 22 in furnace chamber 11, the lower end of partition wall 21 is provided with the first channel 15 being communicated with melting area 12 and blowing district 13, partition wall 21 higher than slag dam 22, in the actual use procedure of this continous way fuming furnace, partition wall 21 is higher than bath surface A, and slag dam 22 is lower than bath surface A.Body of heater 1 is provided with charging opening, smoke outlet 102, first gun slot 103, second gun slot 104 and slag notch 105.Charging opening is used for adding material in melting area 12, and slag notch 105 is for discharging waste from stripping section 14.In addition, continous way fuming furnace 100 is also provided with the first spray gun and the second spray gun, first spray gun is inserted in the first gun slot 103, for spraying into fine coal and oxygen-containing gas in melting area 12, second spray gun is inserted in the second gun slot 104, for spraying into fine coal and oxygen-containing gas in blowing district 13 and stripping section 14.
Slag notch 105 is communicated with stripping section 14.During normal work, discharging residue by slag notch 105 can not discharge completely by the liquid in furnace chamber 11, therefore, in tapping process, still can put into pending material in furnace chamber 11.Thus, this fuming furnace 100 can run continuously, improves the efficiency of this fuming furnace 100 material handling.Oxygen-containing gas and fine coal is passed into melting area 12 by the first gun slot 103, and pass into oxygen-containing gas and fine coal by the second gun slot 104 to blowing district 13 and stripping section 14, be convenient to control respectively the oxygen of the first spray gun and the second spray gun and fine coal, to reach optimum value, thus improve the efficiency of reacting and carrying out.
Specifically, heat material adds after entrance 101 adds the melting area 12 of furnace chamber 11 from heat material, heat material melts in melting area 12, and enter blowing district 13 by first channel 15, and reduction volatilization is carried out in blowing district 13, slag will enter in stripping section 14 from slag dam 22, continue reduction volatilization, regularly discharge from slag notch 105.
Continous way fuming furnace of the present invention also has miscellaneous part, such as corrosion barrier etc., and for can be known in prior art, the present invention be described in detail.
Oxygen-containing gas in the present invention is air, oxygen-rich air or other do not affect fuming containing the gas of oxygen.Describedly do not affect fuming and refer to that other composition in gas gas can not react with material or flue dust, or can not affect the composition of flue dust, this is understandable for those of ordinary skill in the art.
The described charging opening heat material comprised for adding heat material to melting area adds entrance 101 and the cold burden for adding cold burden to melting area adds entrance 107.Thus, be convenient in furnace chamber, add cold burden and/or heat material, this continous way fuming furnace process cold burden or heat material can be facilitated, the operation of this continous way fuming furnace material handling can be reduced, improve processing efficiency, also can realize processing cold burden operation completely.
During normal production, the melt in this continous way fuming furnace 100 remains at the melting rate that more than spray gun accelerates cold burden, to improve the ability of process cold burden, fuel saving, ensure that the ability of process cold burden continuously.
Concrete, as shown in Figure 1, heat material adds entrance 101 and is located on the sidewall of body of heater 1, slag liquid in body of heater 1 can be avoided to add entrance 107 from cold burden and overflow, improve the stability of fuming furnace process slag, and operation environment safety, avoid contaminate environment.
Because continous way fuming furnace 100 of the present invention directly can process cold burden continuously, when not processing heat material, heat material of the present invention adds entrance 101 and can close.Thus reduction calorific loss, improve energy utilization rate, energy-conserving and environment-protective.
Certainly, continous way fuming furnace of the present invention can add cold burden, heat material continuously or heat is expected and the mixture of cold burden, whether fuming furnace of the present invention is that cold burden or heat material are not restricted to the raw material added in furnace chamber, no matter adding in fuming furnace is cold burden or heat material, and fuming furnace all can run by continuous print.
As depicted in figs. 1 and 2, in examples more of the present invention, slag notch 105 comprises the upper slag notch 105a higher than the first gun slot 103 and the second gun slot 104 and lower slag notch 105b lower than the first gun slot 103 and the second gun slot 104, and body of heater 1 is also provided with the drain 106 close to furnace chamber 11 diapire.The residue of rear generation can be reacted by upper slag notch 105a and lower slag notch 105b periodic exhaustion, also can have been emptied, so that maintenance etc. by the internal space of drain 106 pairs of continous way fuming furnaces 100.
Specifically, upper slag notch 105a slagging during normal running, when needing to change spray gun, lower slag notch 105b slagging.Drain 106 is positioned at the position near furnace chamber diapire below lower slag notch 105b, and drain 106 is for melt in emptying stove during blowing out.
Further, body of heater 1 is also provided with the overfiren air port 108 for blasting oxygen-containing gas to the top of furnace chamber 11.Thus, CO superfluous in after-flame furnace gas and combustiblematerials, to ensure that the safety of waste heat boiler and dust collecting system is carried out.
In examples more of the present invention, slag dam 22 lower end is provided with the second passage 109 being communicated with blowing district 13 and stripping section 14.Thus, be convenient to shut down melt in emptying stove.
Furnace chamber 11 diapire is anti-domes, is tilted to put slope to stripping section 14 by melting area 12.Thus, Flow of Goods and Materials is convenient to.
The upper end of body of heater 1 is upwards drawn in gradually and is formed smoke outlet 102.For being connected with the membrane wall of waste heat boiler.
Body of heater 1 is provided with manhole and the manhole plate 16 suitable with this manhole.
The height of the first gun slot 103 is lower than the liquid level in melting area 12, and the height of the second gun slot 104 is lower than the liquid level in blowing district 13.
Temperature in furnace chamber 11 is in the scope of 1100 degrees Celsius to 1350 degrees Celsius.Oxygen-rich concentration in melting area 12, blowing district 13 and stripping section 14 and temperature can regulate, respectively so that the processing efficiency of this continous way fuming furnace 100 reaches the highest.
The both sides of body of heater 1 are equipped with the gun slot for connecting spray gun.Specifically, the both sides of melting area 12 are equipped with the first gun slot 103, and the both sides in blowing district 13 are equipped with the second gun slot 104.First spray gun and the second spray gun are respectively multiple.
Spray gun is two channels spray gun, wherein, and the interior pipe conveying fine coal of spray gun, the outer tube conveying oxygen-containing gas of spray gun.
Bath temperature span of control 1050 ~ 1350 DEG C, comes out of the stove flue-gas temperature 1200 ~ 1400 DEG C in top.
According to the continuous fuming technique of the embodiment of the present invention, have employed the continous way fuming furnace according to previous embodiment of the present invention, continuous fuming technique comprises the following steps: to fuming furnace addition material; Oxygen-containing gas and fine coal is blasted in fuming furnace; The flue dust of Footwall drift oxide compound the waste discharged in fuming furnace.
Always higher than spray gun (the first spray gun and the second spray gun) when liquid level is normally produced in continuous fuming furnace, ensure that spray gun is in submerged state continuously, to realize adding warm sludge continuously or cold burden completes fusing, blowing, dilution technique.Flue gas, after waste heat recovery, enters dust collecting system output containing metal oxide flue dust.The waste periodic exhaustion of stripping section is outer after shrend to be sold.
Specifically, after material adds the melting area of furnace chamber, material melts in melting area, and enter blowing district by first channel, and reduction volatilization is carried out in blowing district, the residue that material reaction completes production enters in stripping section from slag dam, waste from slag notch is discharged after entering dilution in stripping section.
According to the continuous fuming technique of the embodiment of the present invention, when normally producing, reinforced is continuous print, and slagging is interrupted, and only need control liquid level and fluctuate in allowed limits, and fuming furnace just can be made to run by continuous print.
According to one embodiment of present invention, this continuous fuming technique also comprises and blasts secondary air to the top in fuming furnace.Thus, make to be full of oxygen-containing gas in furnace chamber, thus a part of compound in flue gas or metal are reduced, thus be convenient to collect, reduce resources loss, improve the practicality of fuming furnace.
Certainly, continous way fuming furnace of the present invention and continuously fuming technique can process the material of the volatile metals such as leaded, zinc, tin, as lead-zinc furnace cinder, zinc factory leached mud, medium tin ore etc.
The fuming furnace of a simple description specific embodiment of the present invention is to the process of lead-zinc furnace cinder below.
In fact reduction volatilization process is made with the fuming process of fuming furnace process lead-zinc furnace cinder, the mixture of reductive agent (fine coal etc.) and oxygen-containing gas (air etc.) is blasted the liquid slag of fuming furnace from primary air nozzle, the plumbous zinc oxide in slag is made to be reduced to lead, zinc fume, the plumbous oxide that vapour pressure is higher, lead sulfide also directly may volatilize with compound form, metallic vapor, metallic sulfide and oxide compound are with the upper space entering body of heater together with flue gas, then again PbO and ZnO is oxidized to by the secondary air that blasts or furnace gas, and be caught to combine in dust collection device, reclaim with tutty product.In, Cd, Sn and part Ge also volatilize simultaneously, and are captured with ZnO.
Those of ordinary skill in the art can according to foregoing description, and draw the process of continous way fuming furnace of the present invention or continuous fuming art breading zinc factory leached mud, medium tin ore etc. easily, the present invention is no longer described in detail.
In the description of this specification sheets, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.In addition, the different embodiment described in this specification sheets or example can carry out engaging and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (9)
1. a continous way fuming furnace, is characterized in that, comprising:
Body of heater, in described body of heater, there is furnace chamber, be provided with for described furnace chamber being become melting area, blowing district and the partition wall of stripping section and slag dam in described furnace chamber, the lower end of described partition wall is provided with the first channel being communicated with described melting area and described blowing district, described partition wall exceed bath surface and described slag dam lower than bath surface, described body of heater be provided with smoke outlet, the first gun slot, the second gun slot, for adding the charging opening of material and the slag notch for discharging waste from described stripping section in described melting area; And
First spray gun and the second spray gun, described first spray gun is inserted in described first gun slot, for spraying into fine coal and oxygen-containing gas in described melting area, described second spray gun is inserted in described second gun slot, for spraying into fine coal and oxygen-containing gas in described blowing district and described stripping section.
2. continous way fuming furnace according to claim 1, is characterized in that, the described charging opening heat material comprised for adding heat material to melting area adds entrance and the cold burden for adding cold burden to melting area adds entrance.
3. continous way fuming furnace according to claim 2, is characterized in that, described heat material adds entrance and can be located on the sidewall of described body of heater closedly.
4. the continous way fuming furnace according to any one of claim 1-3, it is characterized in that, described slag notch comprises the upper slag notch higher than described first gun slot and the second gun slot and the lower slag notch lower than described first gun slot and the second gun slot, described body of heater is also provided with the drain close to described furnace chamber diapire.
5. the continous way fuming furnace according to any one of claim 1-3, is characterized in that, described body of heater is also provided with the overfiren air port for blasting oxygen-containing gas to the top of described furnace chamber.
6. the continous way fuming furnace according to any one of claim 1-3, is characterized in that, described slag dam lower end is provided with the second passage being communicated with described blowing district and described stripping section.
7. according to described continous way fuming furnace arbitrary in claim 1-3, it is characterized in that, furnace bottom is anti-domes, is tilted to put slope to stripping section by melting area.
8. adopt the continuous fuming technique that the continous way fuming furnace according to any one of claim 1-7 carries out, it is characterized in that, described continuous fuming technique comprises the following steps:
To described fuming furnace addition material;
Oxygen-containing gas and fine coal is blasted in described fuming furnace; With
The flue dust of Footwall drift oxide compound the waste discharged in fuming furnace.
9. continuous fuming technique according to claim 8, is characterized in that, also comprise and blast secondary air to the top in described fuming furnace.
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| CN104451174A (en) * | 2014-12-16 | 2015-03-25 | 耒阳市焱鑫有色金属有限公司 | Continuous fuming furnace |
| CN108425020A (en) * | 2018-05-25 | 2018-08-21 | 中国恩菲工程技术有限公司 | Fuming furnace |
| CN110106363B (en) * | 2019-05-20 | 2020-08-04 | 中南大学 | Modularized continuous fuming production process |
| CN112797806B (en) * | 2020-12-31 | 2021-08-13 | 耒阳市焱鑫有色金属有限公司 | Method for regionally regulating and controlling flame characteristics of continuous fuming furnace |
| CN115433834B (en) * | 2022-08-01 | 2024-01-30 | 长沙有色冶金设计研究院有限公司 | Treatment method of high-iron zinc slag |
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